Developing Library for the MAX7314 I2C 16-bit I/O Expander w/ PWM
Dependencies: mbed PCA9538_Expander
PCF8575.h
- Committer:
- uasenden
- Date:
- 2011-04-13
- Revision:
- 0:7e32b01354d3
File content as of revision 0:7e32b01354d3:
/* mbed PCF8574 Library, for driving the I2C I/O Expander * Copyright (c) 2008-2010, cstyles, sford (Originally PCF8574 lib) * new created by Lerche * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "mbed.h" #ifndef MBED_PCF8575_H #define MBED_PCF8575_H /** Interface to the PCF8575 I2C 16 Bit IO expander */ class PCF8575 { public: /** Create an instance of the PCF8575 connected to specfied I2C pins, with the specified address. * * @param sda The I2C data pin * @param scl The I2C clock pin * @param address The I2C address for this PCF8575 */ PCF8575(PinName sda, PinName scl, int address); /** Read the IO pin level * * @return The two bytes read */ int read(); /** Write to the IO pins * * @param data The 16 bits to write to the IO port */ void write(int data); private: I2C _i2c; int _address; }; #endif